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MEA (Membrane Electrode Assemblies) encapsulated sealing structure as well as manufacturing method and using method thereof

A sealing structure and encapsulation technology, applied in the final product manufacturing, sustainable manufacturing/processing, fuel cells, etc., can solve the problems of low efficiency, restricting the mass production of fuel cells, and taking a long time.

Active Publication Date: 2018-02-27
上海清能合睿兹新能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional fuel cell stack seals each material by dispensing. The dispensing process is semi-manual and semi-mechanical, and the colloid is completely cured for more than 24 hours, which has the disadvantages of long time consumption, poor consistency and low efficiency.
This shortcoming also restricts the mass production of fuel cells

Method used

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  • MEA (Membrane Electrode Assemblies) encapsulated sealing structure as well as manufacturing method and using method thereof
  • MEA (Membrane Electrode Assemblies) encapsulated sealing structure as well as manufacturing method and using method thereof

Examples

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Effect test

Embodiment 1

[0049] like figure 1 and figure 2As shown, a typical proton exchange membrane encapsulated sealing structure of the present invention. The structure includes a fuel cell unit and a sealing strip 10, wherein the fuel cell unit includes a graphite plate 3, an oxygen diffusion layer 4, a proton exchange membrane 5 and a hydrogen diffusion layer 6; the sealing strip 10 is coated on the oxygen diffusion layer 4 , the outside of the proton exchange membrane 5 and the hydrogen diffusion layer 6; the cross-sectional area of ​​the hydrogen diffusion layer 6 is less than the cross-sectional area of ​​the proton exchange membrane 5 and the oxygen diffusion layer 4; the cross-sectional area of ​​the proton exchange membrane 5 and the oxygen diffusion layer 4 is smaller than the graphite plate 3 cross-sectional area; the inner side of the sealant 10 is a stepped form matching the oxygen diffusion layer 4 , the proton exchange membrane 5 and the hydrogen diffusion layer 6 . A plurality o...

Embodiment 2

[0051] The present invention is a kind of method for manufacturing the sealed structure of MEA encapsulation, the method comprises the following steps: (a) provide hydrogen gas diffusion layer, proton exchange membrane and oxygen diffusion layer, and stack them together, stack hydrogen gas diffusion layer, proton gas diffusion layer The four corners of the exchange membrane and the oxygen diffusion layer are fixed with silica gel; wherein, the proton exchange membrane is sandwiched between the hydrogen diffusion layer and the oxygen diffusion layer; and the hydrogen diffusion layer, the proton exchange membrane and the oxygen diffusion layer are stepped; the hydrogen diffusion A catalyst layer is provided between the layer and the proton exchange membrane, and a catalyst layer is also provided between the oxygen diffusion layer and the proton exchange membrane; (b) put the stacked hydrogen diffusion layer, proton exchange membrane and oxygen diffusion layer into the mold , cove...

Embodiment 3

[0053] A method of using the MEA-encapsulated sealing structure of the present invention, the method is to stack and assemble a plurality of sealing structures of the present invention, and realize sealing by compressing the area of ​​the sealing strip. The plurality of structures in a hermetic assembly are fastened to form a fuel cell stack.

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Abstract

The invention discloses an MEA (Membrane Electrode Assemblies) encapsulated sealing structure as well as a manufacturing method and a using method thereof. The MEA encapsulated sealing structure comprises a fuel cell unit and a sealing rubber strip, wherein the fuel cell unit comprises a graphite plate, a diffusion layer on one side, a proton exchange membrane, a catalyst layer and a diffusion layer on the other side; the sealing rubber strip enwraps the diffusion layer on one side, the proton exchange membrane, the catalyst layer and the diffusion layer on the other side; the area of the diffusion layer on one side is smaller than those of the proton exchange membrane and the diffusion layer on the other side; the diffusion layer on one side is an oxygen diffusion layer; the diffusion layer on the other side is a hydrogen diffusion layer; the areas of the proton exchange membrane and the diffusion layer on the other side are smaller than that of the graphite plate; the inner side of the sealing rubber strip is shaped into steps matched with the diffusion layer on one side, the proton exchange membrane, the catalyst layer and the diffusion layer on the other side. The MEA encapsulated sealing structure is good in sealing effect and fast to mould.

Description

technical field [0001] The present invention relates to the technical field of fuel cells, and more particularly relates to an MEA-encapsulated sealing structure, a method for manufacturing the sealing structure, and a method for using the sealing structure. Background technique [0002] Fuel cells can directly convert hydrogen and oxygen (usually oxygen in the air) into electricity with high efficiency, and the by-product of the reaction is pure water. Therefore, it has the advantages of energy saving and environmental protection. [0003] The traditional fuel cell stack seals each material by dispensing. The dispensing process is semi-manual and semi-mechanical, and the colloid is completely cured for more than 24 hours, which has the disadvantages of long time consumption, poor consistency and low efficiency. This shortcoming also restricts the mass production of fuel cells. [0004] Therefore, there is an urgent need in this field to develop a new sealing structure wit...

Claims

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Application Information

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IPC IPC(8): H01M8/0276H01M8/2404
CPCH01M8/0276H01M8/2404Y02E60/50Y02P70/50
Inventor 顾志军陈杰周震
Owner 上海清能合睿兹新能源科技有限公司
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